Domain Expiration Notify Script

Adding to CRON
These scripts are intended to be run periodically on a server. The first script should be run every 15-30 minutes, as to not flood WHOIS servers or cause problems with retrieving WHOIS information. The second script should be run once a day, to send out notifications of domain expirations.

To add to CRON add the following lines to /etc/crontab or root's crontab:
*/30 * * * * root lynx -dump http://www.yourdomain.com/whois.php 1> /dev/null 2> /dev/null
00 1 * * * root lynx -dump http://www.yourdomain.com/domainnotify.php 1> /dev/null 2> /dev/null
*Be sure to replace www.yourdomain.com with the appropriate http location of your script and the script names with whatever names you saved the script code to.

You could also run these scripts using php's cgi executable, if you have it installed on your system (likely in /usr/bin/php).

Overview
These scripts are meant to give you some ideas on how to solve the problems associated with domain renewals. There are some third-party sites available that will gladly take your money to notify you of domain status changes or domain expirations, but if you're tight on cash or don't have a large number of domains to monitor, these scripts should do just the trick.